JPH0340037Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a wiring duct that accommodates a large number of electric wires.

<Prior Art> An example of a conventional wiring duct is shown in FIG. The duct body, in which the bottom plate 1 and both side walls 2 and 3 are integrated, is continuously molded using an extrusion molding method using a U-shaped mold.
5 is formed, and then openings 6...6 for drawing out electric wires are punched out at predetermined intervals on both side walls 2, 3.

If the user of such a wiring duct wants to expand the opening for drawing out the electric wires, the upper part 7 of the side wall
7 is cut with a tool such as nippers, and the cut side wall piece 8 is bent by hand to break along the break-off groove 4 and form an enlarged opening.

<Problem to be solved by the invention> However, as shown in FIG. 6, the enlarged opening formed in this way leaves a burr 9 at the break-off part that intersects with the direction in which the wire is led out, which deteriorates the insulation of the wire. There was a problem of damaging the coating.

An object of the present invention is to provide an improved wiring duct in which such burrs 9 do not remain.

<Means for solving the problem> In the wiring duct of the present invention, the lower side of the opening is expanded to the lower side until the end face of the bottom plate is exposed, and a break-off groove is formed along the upper ridge of the end face of the bottom plate. It is characterized by what it has done.

<Function> When a part of the side wall of the wiring duct of the present invention is broken off to enlarge the opening, burrs on the broken-off part are generated almost parallel to the direction in which the electric wires are led out, so that the insulation coating of the electric wires is not damaged. There is no.

<Embodiment> Fig. 1 is a side view of an embodiment of the present invention, Fig. 2 is a sectional view taken along line B-B, and Fig. 3 is an enlarged view of section A in Fig. 2.

Side walls 12 and 13 stand up on both left and right sides of the bottom plate 11 to form a rectangular gutter shape as a whole, and openings 14 . . . 14 for drawing out electric wires are formed in the left and right side walls 12 and 13. The lower side of this opening 14 for drawing out electric wires is expanded downward until at least the upper part of the end surface of the bottom plate 11 is exposed. The break-off grooves 15 are not formed in the side walls, but are formed so as to round off the portions along the upper ridges of both left and right sides of the bottom plate 11. Furthermore, recesses 16 are formed on both left and right sides of the lower surface of the bottom plate 11, and the thickness of the left and right sides is thinner than that of the center.

As is well known in the art, locking portions 17 are formed at the upper ends of the left and right side walls to lock a lid 18 that closes the top surface of the duct body to prevent the electric wires from spilling out.

The wiring duct of the present invention is manufactured by an injection molding method.

When using this wiring duct, if you want to enlarge the opening for drawing out the electric wires, as usual, cut both sides of the upper part of the side wall piece to be broken off with a tool such as a nipper, and bend the side wall piece outward with your fingers. Fourth
As shown in the figure, the boundary between the side wall and floorboard is destroyed to form an enlarged opening. Since the burr 19 generated at the time of destruction extends almost parallel to the upper and lower surfaces at a position lower than the upper surface 21 of the bottom plate 11, it cannot block the space through which the electric wire passes through the opening, and may damage the insulation coating of the electric wire. do not have.

As a modification of the present invention, the lower side of the wire lead-out opening may extend to the lower end of the side walls 12, 13.

<Effects of the invention> According to the invention, the lower side of the opening for drawing out electric wires is expanded downward until the end face of the bottom plate of the duct body is exposed, and a break-off groove is formed along the upper edge of the end face of the bottom plate. The burrs generated when the side wall piece is broken off are located at a position lower than the draw-out opening and parallel to the direction in which the wires are drawn out, so there is no risk of damaging the wire insulation coating.

[Brief explanation of the drawing]

Fig. 1 is a side view of the embodiment of the present invention, and Fig. 2 is a side view of the embodiment of the present invention.
3 is an enlarged view of section A shown in FIG. 1, and FIG. 4 is an explanatory view of the operation of the present invention. FIG. 5 is a perspective view showing a conventional example, and FIG. 6 is an explanatory diagram of the operation of the conventional example. 11... Bottom plate, 12, 13... Side wall, 14...
Opening portion, 15... Breaking groove, 16... Recess in bottom plate.

Claims (1)

[Scope of utility model registration request] Side walls are raised up on both the left and right sides of the bottom plate to form a gutter-like shape as a whole, and openings for drawing out electric wires are provided in parallel on the side walls, and break-off grooves are formed to connect the lower sides of adjacent openings. A wiring duct, characterized in that the lower side of the opening is expanded toward the lower side until the end face of the bottom plate is exposed, and the breaking groove is formed along the upper edge of the end face of the bottom plate.